"Change The Tires" or "Changing The Tires" refers to replacing the damaged aluminium foil cone on a homemade temporary weed pipe.
Friend: "Hurry up I haven't had a cone in ages"

Me: "Sorry mate I need to change the tires"

Friend: "Hurry up man"
by Hobane February 14, 2018
When two or more people soil their own underpants, swap them and then soil said underpants in the other manner.
David and I bonded on a new level by changing tires. We thought we were just merging scat but we were actually fusing souls.
by MonsterBoi August 8, 2017